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Ecology Chapter 11
Species Interactions II: Predation
10
Biology
Undergraduate 2
12/14/2011

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Term
aposematic
Definition
warning coloration indicating to a predator that this prey is poisonous or highly defended against attack
Term
coevolution 
Definition
the mutual evolutionary influence between two species; each party in coevolutionary relationship exert selective pressures on the other, thereby affecting each others' evolution, back and forth
Term
environmental heterogeneity
Definition
variation in space in any environmental parameter such as soil pH or tree cover 
Term
functional response
Definition
the change in the intake rate of a predator in relation to the density of its prey species
Term
generalist predators
Definition
predators that eat a great variety of prey species
Term
handling time
Definition
the time utilized by a predator to consume an individual prey
Term
numerical response
Definition
the change in the numbers or density of a predator in realtion to the changes in density of its prey species
Term
prey isocline
Definition
the countour line of densities of predator and prey at which the prey are in equilibrium; the impact of a predator exactly balances the prey's rate of population growth, so the prey population growth rate is zero
Term
safe sites
Definition
for animals, sites where prey individuals are able to avoid predation; for plants, sites where seeds can germinate and plants can grow
Term

What is the relationship between generalist 

predators and prey and specialist predators 

and prey?

Definition

  Generalists stabilize prey number;

Specialists cause instability in prey 

numbers

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